A few blocks from the site, friends and families of the 73 people who died at Windows on the World, the restaurant at the top of the trade center, tossed roses into the Hudson River for each of the victims. "We used to be a family and more than a family. We used to say, `God bless Windows on the World,"' said Fekkek Mamdouh, who was a waiter there. At sundown, light beams that evoke the twin towers will be projected upward from a lot near the site, to remain on through the night. The memorial lights were first seen on March 11, 2002, to mark six months since the attack, with a plan to light them each year for the anniversary.